Calgary Researchers Unlock New Quantum Potential in Diamonds

Researchers at the University of Calgary have made a groundbreaking discovery that could redefine the use of diamonds in quantum technology. In early December 2025, the team at the university’s Quantum Nanophotonics Lab published a paper detailing their findings on the optical properties of diamonds, particularly regarding a phenomenon known as second-harmonic generation. This process involves converting light from one color to another by altering the frequency and wavelength of light waves.

Historically, diamonds were considered unsuitable for this type of optical transformation due to their highly symmetrical crystalline structure. However, the research team demonstrated that by exploiting specific defects within the diamond’s crystal lattice, they could achieve this transformation, challenging previous assumptions in the field.

Dr. Paul Barclay, a professor in the Department of Physics and Astronomy and the lab’s lead, emphasized the significance of their findings. “Not only are we kind of breaking the rules by seeing these effects, but we’ve done so in a way where we can control how strongly we are breaking the rules,” he stated in an interview. This control over the optical properties opens new avenues for applications in quantum nanophotonics.

New Applications in Quantum Technology

The implications of this discovery are vast. According to Sigurd Flågan, a postdoctoral scholar who led the experimental phase, diamonds are capable of handling substantial laser power without damage. “What we can do with our discovery now is, in principle, create an optical switch, laser, or modulator that can handle a lot more power than is currently achievable,” Flågan explained. This capability positions diamonds as a potentially crucial material for advanced technologies in data centers, high-powered laser fabrication, and optical processing.

The research has been in progress for several years, with initial observations of the phenomenon occurring in late 2023. Flågan noted that while the findings were officially published in December 2025, the team worked diligently to refine their understanding and model throughout 2024.

As the demand for high-performance optical devices continues to grow, the University of Calgary’s research could play a pivotal role in shaping the future of quantum technology. The province of Alberta is already fostering innovation in this field, recently announcing a commitment of $55 million to establish a tech and science hub at the university. This investment underscores the importance of such research in the evolving technological landscape.

With their innovative approach to diamond applications, the researchers at the University of Calgary are poised to contribute significantly to advancements in quantum nanophotonics, reinforcing the notion that diamonds, traditionally associated with luxury, may also become essential in cutting-edge science.